code: def test_ablation_flip_long_sentence(self):
      sentence = (
          "this was a terrible terrible movie but I am a writing "
          "a nice long review for testing whether AblationFlip "
          "can handle long sentences with a bounded number of "
          "predict calls."
      )
      ex = {"sentence": sentence}
      self.classification_config[ablation_flip.NUM_EXAMPLES_KEY] = 100
      self.classification_config[ablation_flip.MAX_ABLATIONS_KEY] = 100
      self.classification_config[ablation_flip.FIELDS_TO_ABLATE_KEY] = [
          "sentence"
      ]
      model = self.classification_model_with_predict_counter
      cfs = self.ablation_flip.generate(
          ex, model, None, self.classification_config
      )
  
      # This example must yield 19 ablation_flips.
      self.assertLen(cfs, 19)
  
      # Number of predict calls made by ablation_flip should be upper-bounded by
      # <number of tokens in sentence> + 2**MAX_ABLATABLE_TOKENS
      num_tokens = len(model.tokenizer(sentence))
      num_predict_calls = model.predict_counter
      self.assertLessEqual(
          num_predict_calls,
          num_tokens + 2**ablation_flip.MAX_ABLATABLE_TOKENS,
      )
  
      # We use a smaller value of MAX_ABLATABLE_TOKENS and check that the
      # number of predict calls is smaller, and that the prediction bound still
      # holds.
      model.predict_counter = 0
      ablation_flip.MAX_ABLATABLE_TOKENS = 5
      self.assertLessEqual(model.predict_counter, num_predict_calls)
      self.assertLessEqual(
          model.predict_counter,
          num_tokens + 2**ablation_flip.MAX_ABLATABLE_TOKENS,
      )
  
imports: from collections.abc import Iterable, Iterator
  from absl.testing import absltest
  from lit_nlp.api import types
  from lit_nlp.components import ablation_flip
  from lit_nlp.examples.models import glue_models
  import numpy
  from lit_nlp.lib import file_cache
label_desc: Use image node_id 5 for calling the ModelBasedAblationFlipTest obj's underlying member method code with example usage: obj.test_ablation_flip_long_sentence() without return types